knotslck
10+ year member
CarAudio.com Elite
i was trying to find out if this amp,thunder 421d, had a ssf. i don't see one in the manual. could that be considered a 24db/octave low pass in the manual? i am going to hook it up to a kicker cvr 12 in a 38hz ported box and i don't want it blow if it hits any low freqs. any one have this amp?